Roger Weller, geology instructor
[email protected]
copyright
2010-R.Weller
pyrite-octahedron crystal-5
Mayer, Arizona
Crystal has a dark tarnish.
pyrite
5929
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen
courtesy of Yavapai Community College
Beth Boyd